TW230809B - Bar code reading device - Google Patents

Bar code reading device

Info

Publication number
TW230809B
TW230809B TW082105123A TW82105123A TW230809B TW 230809 B TW230809 B TW 230809B TW 082105123 A TW082105123 A TW 082105123A TW 82105123 A TW82105123 A TW 82105123A TW 230809 B TW230809 B TW 230809B
Authority
TW
Taiwan
Prior art keywords
bar code
dimensional bar
image
lines
scanning lines
Prior art date
Application number
TW082105123A
Other languages
Chinese (zh)
Inventor
Yutaka Andachi
Original Assignee
Olympus Optical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co filed Critical Olympus Optical Co
Application granted granted Critical
Publication of TW230809B publication Critical patent/TW230809B/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/1093—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing, after transfer of the image of the data-field to an intermediate store, e.g. storage with cathode ray tube
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
    • G06K7/1417—2D bar codes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/1439—Methods for optical code recognition including a method step for retrieval of the optical code
    • G06K7/1443—Methods for optical code recognition including a method step for retrieval of the optical code locating of the code in an image

Abstract

A bar code reading device, which comprises: a photographic device, which is used to snatching two-dimensional bar code; a frame memory device, which memorized the image of two-dimensional bar code snatched by the photographic device; and a bar code reading control device, which detects the coordinates of the four corners of the image of two-dimensional bar code memorized in the frame memory device and detects the four linear equations which pass through the four corners, the space between the two lines, which correspond to the beginning code and ending code of the image of two-dimensional bar code, is equally divided as the multiple scanning lines of the scanned two-dimensional bar code image, meanwhile the space between the two remaining lines is equally divided as the multiple sampling lines which sample the two-dimensional bar code image along the multiple scanning lines, through sampling two-dimensional bar code image at the multiple positions where each line of the multiple scanning lines crosses the multiple sampling lines the messages contained in the two-dimensional bar code of the two-dimensional bar code image are read.
TW082105123A 1992-05-29 1993-06-28 Bar code reading device TW230809B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13941292A JP3187936B2 (en) 1992-05-29 1992-05-29 Barcode reader

Publications (1)

Publication Number Publication Date
TW230809B true TW230809B (en) 1994-09-21

Family

ID=15244638

Family Applications (1)

Application Number Title Priority Date Filing Date
TW082105123A TW230809B (en) 1992-05-29 1993-06-28 Bar code reading device

Country Status (5)

Country Link
US (1) US5378881A (en)
JP (1) JP3187936B2 (en)
KR (1) KR100275007B1 (en)
CN (1) CN1043545C (en)
TW (1) TW230809B (en)

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Also Published As

Publication number Publication date
KR930023865A (en) 1993-12-21
JPH05334479A (en) 1993-12-17
CN1043545C (en) 1999-06-02
JP3187936B2 (en) 2001-07-16
KR100275007B1 (en) 2000-12-15
US5378881A (en) 1995-01-03
CN1079321A (en) 1993-12-08

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